Fluid joint



Jn. 13, 1948. A, J, TAYLQR y 2,434,629 v FLUID JOINT Filed Jan. 24, 1944 Patented Jan. 13, 1948 ii TED STATES OFFICE FLUID JOINT Application January 24, 1944,'Serial No. V519,478 v My invention relates to structure comprising members hingedly connected together to permit Vof relative movement of said members and wherein it is desired that provision be made for the .passage of fluid through the hinge-joint and in at least one of said members.

My primary object is to provide such a structure whereby the fluid in its travel through one or both of the hingedly connected members in the different relative positionings of said members travels through the pin of the hinge, and the joint formed between the pin and the structure comprising said members is rendered duid tight; other more specific objectswill be understood from the following description. c

Referring to the accompanying drawings:

Figure 1 isa broken View in vertical sectional elevation of a hydraulic jack construction, embodying the invention and involving the flowing of the fluid from a source thereof to the ram of the jack and its return to said source through the same course;

Figure 2v is a section taken at the line 2-2 on Fig. l and viewed in the direction of the arrows;

YFigure 3 isa broken view in sectional elevation of another construction embodying the invention in which the fluid is caused to travel from a source thereof through one course for its intended purpose and thereafter to travel through another course;

Figure 4 is a section taken at the line 4-4 on Fig. 3 and viewed in the direction of the arrow;

Figure 5 is a ViewY like Fig. 1 of another embodiment of theinvention in a hydraulic jack wherein the ilow of the fluid to the ram and its return to the source is through the same course; and Y Figure v5, a section taken at the line 6 on Fig. 5 and viewed in the direction of the arrow.

Referring to the construction shown in Figs. 1 and 2 it involves two members I and 8 which it is desired be hingedly connected together, the member 1 having a passage 9 therein which would communicate with a pump connected with a receptacle. (not shown) carried by the member i and in which the hydraulic fluid to be used Wouid be' contained. The member 8, shown as in the form of a head, providing a cylinder I in which the ram II of the jack is slidable, has a passage I2 opening at one end into the bottom of the cylinder I0. Y .The member 'I is formed at one end with a forkfportion aifording spaced apart legs I 3 and Min' the ,space between which an ear .I5 on the head 8 is located.

Claims. (Cl. 285-963) The' legs I3 and I4 and'ear I5 are bored cross'- -wise tl'rereof,fas represented at I5, I'Iandy i8,

respectively, to provide a tapered opening I9 extending through these legs and ear and forming a bearing for a tapered `hinge rpin 20, the'passages'S and I2 opening through the leg Illand the ear I5, respectively, into the interior of the bearing. I i i The tapered hinge pin 2B has two spaced apart arcuate grooves 2l and 22, shown as endless, in its periphery, with a crossgroove 23 rcommunieating at its ends with the grooves 2| and 22, respectively, these grooves forming passages for fluid. The Din 20 is locatedin the tapered bearing-opening I9. with its grooves 2l and 22 registeringwith the passages 9 and I2, respectively, regardless of the positionings of the members l and 8 relative to each other about the axis of the hinge pin, and is drawn intosuch tight engagement with the wall of the opening I9 by a self-locking nut 23 Vscrewed on the small end of the pin-20 against a washer 24 which bears against the outer surface of theleg- I3, asl to render` the joint between the pin 20 and the bearing sufficiently tight to prevent leakage of iluid, especially when under relatively high pressure, out of the bearing-opening I9, but still permit of the relative movement of the Amembers 1 and 8 about the axis of the hinge pin 20.

As will be understood, in the use ofthe jack, fluid is forced, as for example by the pump referred to, to the ram-cylinder I0 for actuating the ram, through the passage Sto the hinge pin 2B, the i'luid entering the groove 2| and thence passing through the cross-groove 23,1150 the groove 22 from which it passes into passage I2 and thence to the cylinder.

This particular construction as above stated contemplates the return of the actuating iluid to the `source from which it wassupplied, through the samecourse, but in a reverse direction, as that traveled by thevfluid in passing .to the cylinder.Y t y s ,Y

Referring to the construction shown in Figs.

A3 and 4 wherein it is contemplated that the fluid to be conducted to the point of use will flow through one course from a supply thereof and flow from the point of use through another course, the construction shown involves two members 24 and 25 which it is desired be hingedly' connected together.v The member 24' has passages 25` and 2l, respectively', therein, the passage 26 leading from a source of supply (not shown) of the fluid to be used andthe otherpassage ZIleading to any desired pointzof discharge of the fluid. The

member 25 has passages 28 and 29, the passage 28 leading to the point of use of the uid, and the passage 29 leading away from such point of use.

The member 24 has a forked end presenting spaced-apart legs 30 and 3ly and the member 25 has an ear 32 which extends into the space between the legs. The legs 30 and 3| and' the ear 32 are bored orosswise thereof as represented at 33, 34 and 35, respectively, to provide a tapered opening 36 extending through these legs and the ear and forming a bearing for a tapered hinge pin 31, the passages 26 and 21 opening through the legs into the interior of the bearing and the passages 28 and 29 opening through the e'ar 32 into the interior of the bearing.

The tapered hinge pin 31 has four spaced-apart arcuate grooves 38, 39, 40 and 4|, shown as endless, in its periphery, with a cross-groove 42 cornmunicating at its endsV with the grooves 38 and 39, and a cross-groove43 communicating at its ends with the grooves 40 and 4l, all of these grooves forming passages for iiuid.

The pin A31 is located inthe tapered bearingopening 36, with its grooves38, 39,740 and 4l registering, with the passages 21, 29, 28 and 26, respectively, regardless ofthe positionings of the members 24 and 25 relative to each other about 'the axis of the hinge pin, and is drawn into 'tight engagement with the wall of the opening 36 'as in the case of the construction shown in Figs. 1 and 2 and for the same purpose, the nut and washer of this construction being represented at 44 and 45, respectively.

As will be understood from the foregoing, uid supplied to the passage'28 passes into the` groove 4l thence to groove 4U through the cross-groove 43 and from groovewto the passage 28 in member 25 from which it passes tothe point of use; the fluid in` leaving the point of use' would pass into the passage 2s in member 25, thence into the groove 39 and through the cross-groove' 42 to groove 38 and then into passage 21 in the inem ber 24v through which it would flow to the desired point of disposal.

Referring to the construction shown in Figs. and 6 which is in the form of a hydraulic jack as in the case of the construction shown in Figs. 1 and 2, the two members corresponding with the members 1 and 8 being indicated' at 46vv and 41, the member 46 has' a forked end affording spaced-apart lugs i8 and 4'9 into the space be'- tween which an ear 58 on the member 41 is located, the lugs and ear being bored transversely to provide a tapered bearing-opening 5I for a tapered hinge pin 52. The hinge pin 52 is provided with a passage 53 extending lengthwise of the pin for connection at a boss 54 on the pin with a, hose 55 provided 'for the saine purpose as' the passage s in the inerriherv 1, the upperv end of the hose' 55 being connected with` the memter le and" opening into a passageA (not shown) con; municating withV the pump of the lack. The passage 53 opens into a cross-passage 56 in the pin which, in turn, opens into anarcuate groove 51, shown as endless, in its peripliery,v which registers with one end of Va. passage 58 the member 41 regardless of the positionin'gs of the members 46 and 41 relative to each other about the axis of the hinge pin, the opposite end of the passage 58 opening into theV ram cylinder indicated at' 59.

The pinr 52 is provided with a nut 60 andwasher 8f as, andl for the',',it'lrp`ose",` explained of' the nut and washer in the construction shown in Figs. 1 and 2.

Preferably the hinge pin in each of the constructions shown conformingly ts the wall of the bearing-opening throughout the length of the portion of the pin within the bearing opening.

While I have illustrated and described certain particular constructions embodying my invention, I do not wish to be understood as intending to limit the invention thereto as the same may be variously modified and altered and the invention embodied in other forms of structure, without departing from the spirit of the invention.

What I claim as new and desire to secure by Letters Patent is:

1. A structure comprising a plurality of members having lapping portions, and fluid-joint means for hinging said members together comprising a hinge pin located in certain of said lapping portions and in ui'd-joint-forming' relation to ycertain of lsaid members; said members having fluid passages opening to said pin and said pin having fluid passages through which iiuid may ow lfromV one to the other of said members in the various positions of said mem'- bers relative to each other angularly about the longitudinal axis of said pin.

2. A structure comprising a plurality of members having parallel lapping portions, and iluidjoint means for hinging said members together comprising va hinge pin located in certain of said lapping portions and in uid-joint-forming re'- lation to certain of said members, each of said members having a fluid passage opening to said pin, said pin having arcuate grooves in its periphery in communication withl each other and registering with the passages in said members, respectively.

3. A structure comprising a plurality of meinbers having parallel lapping portions, and iiuidjoint means for hinging said members together comprising a tapered hinge pin located in certain of said lapping portions and in fluid-joint- Vforming relation to certain of said members, each of said members having a fluid passage opening to said pin, said pin having arcuate grooves in its periphery in communication with each other and registering with the passages in lsaid members, respectively, the communication between said arcuate grooves including a groove in the pin connecting said arcuate grooves.

4; A structure comprisingI a plurality of members having lapping portions, and iluid-joint means for hinging said members together comprising a hinge pin located in said lapping portions and in fluid-joint-forming relation thereto, each of said members having a. pair of fluid passages opening to said pin', said. pin having two sets of arcuate grooves in its periphery, one of the grooves of each set beingy in communication with the other groove of the set, oneV groove of each set registering with they passages, respectively, in one of said-1 members'V and thev other groove of each set registering' with the passages, respectively, in the other oi' said members.

5. A structure comprising aplurallty of mem= bers having lapping portions, and duid-joint means for hinging said members together comprising a tapered hinge pin located in said lap ping portions and in iiuid-joint-forming relation thereto, each of said members having a pair of uid passages opening to said' pin, said pin having' two sets of arcuate grooves in its periphery, one of the grooves of each set being in communi- 5 cation with the other groove of the set by means of a groove in the pin connecting them together, one groove of each set registering with the passages, respectively, in one of said members and the other groove of each set registering with the passages, respectively, in the other of said members.

ASA J. TAYLOR.

REFERENCES CITED The following references are of record in the le of this patent:

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